the church found out about the wedding which took place in massachusetts in 2007. shafer says he hopes his case will be the beginning of change for his church. >>> now to a stunning revelation from one of our own. abc news correspondent amy robach has announced she has breast cancer. amy was diagnosed after getting a mammogram live on "good morning america" six weeks ago. she did the test on the air in a mobile clinic for breast cancer awareness month. at 40 years old, it was her first mammogram, one she had been putting off for a year. >> the whole reason i walked in the van was to raise awareness for people to get mammograms. and little did i know that i would be a walking example of having a mammogram to save my life. you are a walking example -- >> reporter: she plans to have a double mastectomy. as you can see, she broke the news alongside robin roberts, a breast cancer survivor herself. two strong women. >> it is a battle for untold number of women around the world and to do it on tv is brave. >> it is hard. >> the thing that struck me on "gma" yesterday was,